package org.andengine.opengl.texture.atlas.bitmap.source.decorator.shape;

import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;

import org.andengine.opengl.texture.atlas.bitmap.source.decorator.BaseBitmapTextureAtlasSourceDecorator.TextureAtlasSourceDecoratorOptions;

/**
 * (c) 2010 Nicolas Gramlich
 * (c) 2011 Zynga Inc.
 *
 * @author Nicolas Gramlich
 * @since 12:50:09 - 04.01.2011
 */
public class RoundedRectangleBitmapTextureAtlasSourceDecoratorShape implements IBitmapTextureAtlasSourceDecoratorShape {
    // ===========================================================
    // Constants
    // ===========================================================

    private static final float CORNER_RADIUS_DEFAULT = 1;

    // ===========================================================
    // Fields
    // ===========================================================

    private final RectF mRectF = new RectF();

    private final float mCornerRadiusX;
    private final float mCornerRadiusY;

    private static RoundedRectangleBitmapTextureAtlasSourceDecoratorShape sDefaultInstance;

    // ===========================================================
    // Constructors
    // ===========================================================

    public RoundedRectangleBitmapTextureAtlasSourceDecoratorShape() {
        this(CORNER_RADIUS_DEFAULT, CORNER_RADIUS_DEFAULT);
    }

    public RoundedRectangleBitmapTextureAtlasSourceDecoratorShape(final float pCornerRadiusX, final float pCornerRadiusY) {
        this.mCornerRadiusX = pCornerRadiusX;
        this.mCornerRadiusY = pCornerRadiusY;
    }

    public static RoundedRectangleBitmapTextureAtlasSourceDecoratorShape getDefaultInstance() {
        if (sDefaultInstance == null) {
            sDefaultInstance = new RoundedRectangleBitmapTextureAtlasSourceDecoratorShape();
        }
        return sDefaultInstance;
    }

    // ===========================================================
    // Getter & Setter
    // ===========================================================

    // ===========================================================
    // Methods for/from SuperClass/Interfaces
    // ===========================================================

    @Override
    public void onDecorateBitmap(final Canvas pCanvas, final Paint pPaint, final TextureAtlasSourceDecoratorOptions pDecoratorOptions) {
        final float left = pDecoratorOptions.getInsetLeft();
        final float top = pDecoratorOptions.getInsetTop();
        final float right = pCanvas.getWidth() - pDecoratorOptions.getInsetRight();
        final float bottom = pCanvas.getHeight() - pDecoratorOptions.getInsetBottom();

        this.mRectF.set(left, top, right, bottom);

        pCanvas.drawRoundRect(this.mRectF, this.mCornerRadiusX, this.mCornerRadiusY, pPaint);
    }

    // ===========================================================
    // Methods
    // ===========================================================

    // ===========================================================
    // Inner and Anonymous Classes
    // ===========================================================
}